Issue 2174 in sympy: LUdecompositionFF and det_bareis are returning fractions

2011-01-31 Thread sympy
Status: New Owner: Labels: Type-Defect Priority-Medium New issue 2174 by ffxvz...@gmail.com: LUdecompositionFF and det_bareis are returning fractions http://code.google.com/p/sympy/issues/detail?id=2174 LUdecompositionFF and det_bareis (determinant using bareis algorithms) are very use

Re: Issue 2174 in sympy: LUdecompositionFF and det_bareis are returning fractions

2011-01-31 Thread sympy
Comment #1 on issue 2174 by ffxvz...@gmail.com: LUdecompositionFF and det_bareis are returning fractions http://code.google.com/p/sympy/issues/detail?id=2174 There was a typo. det_bareis would look like: D = div(D,M[k-1,k-1],*symbols)[0] -- You received this message because you are subscr

Re: Issue 2172 in sympy: diagonalize method to Matrix

2011-01-31 Thread sympy
Comment #1 on issue 2172 by pr...@goodok.ru: diagonalize method to Matrix http://code.google.com/p/sympy/issues/detail?id=2172 I am going to examine this issue, though not quickly. First of all, how to form the result. 1) case if it is not diaganalizable (over the reals field, over the complex

Re: Issue 2081 in sympy: Pow substitution introduces wrong answers

2011-01-31 Thread sympy
Comment #16 on issue 2081 by asmeurer: Pow substitution introduces wrong answers http://code.google.com/p/sympy/issues/detail?id=2081 But we need three types of substitution. Exact substitution (issue 2026), algebraic substitution (what it does now), and a mix that does the algebraic sub

Re: Issue 2172 in sympy: diagonalize method to Matrix

2011-01-31 Thread sympy
Comment #2 on issue 2172 by asmeurer: diagonalize method to Matrix http://code.google.com/p/sympy/issues/detail?id=2172 1. I think we should default to complex, but maybe add a keyword option to only do it over the reals. Actually, if we really wanted to, we could use Poly and allow the cha

Re: Issue 2084 in sympy: limit(1+1/x, x, 0, dir='-') fails

2011-01-31 Thread sympy
Updates: Status: Fixed Comment #67 on issue 2084 by nicolas@gmail.com: limit(1+1/x, x, 0, dir='-') fails http://code.google.com/p/sympy/issues/detail?id=2084 Thanks Aaron. That's in now. -- You received this message because you are subscribed to the Google Groups "sympy-issues"

Issue 2175 in sympy: Add.as_coeff_terms not respecting x

2011-01-31 Thread sympy
Status: Accepted Owner: smi...@gmail.com Labels: Type-Defect Priority-Medium NeedsReview smichr New issue 2175 by smi...@gmail.com: Add.as_coeff_terms not respecting x http://code.google.com/p/sympy/issues/detail?id=2175 The following is giving the wrong result when 'x' has been specified:

Re: Issue 2175 in sympy: Add.as_coeff_terms not respecting x

2011-01-31 Thread sympy
Comment #1 on issue 2175 by smi...@gmail.com: Add.as_coeff_terms not respecting x http://code.google.com/p/sympy/issues/detail?id=2175 [ https://github.com/sympy/sympy/pull/61 ], commit numbered 2175 -- You received this message because you are subscribed to the Google Groups "sympy-issues"